摘要:
Disclosed herein is a method of producing an optically active thiophene-based compound using a simulated moving bed adsorption separation process, and more specifically, a method of continuously separating a racemic thiophene-based compound into its optically active thiophene-based compounds having high purity, through optical resolution using the simulated moving bed process. According to the method of the current invention, a racemic mixture of a thiophene-based compound can be continuously separated into its optically active thiophene-based compounds having high purity, which is an intermediate of optically active dorzolamide acting as a topical therapeutic agent for glaucoma, using a simulated moving bed adsorption separation technique, thereby increasing industrial usability.
摘要:
Disclosed herein is a method of producing an optically active thiophene-based compound using a simulated moving bed adsorption separation process, and more specifically, a method of continuously separating a racemic thiophene-based compound into its optically active thiophene-based compounds having high purity, through optical resolution using the simulated moving bed process. According to the method of the current invention, a racemic mixture of a thiophene-based compound can be continuously separated into its optically active thiophene-based compounds having high purity, which is an intermediate of optically active dorzolamide acting as a topical therapeutic agent for glaucoma, using a simulated moving bed adsorption separation technique, thereby increasing industrial usability.
摘要:
The present invention relates to a method of producing aromatic products (benzene/toluene/xylene) and olefin products from petroleum fractions obtained by fluid catalytic cracking, and, more particularly, to a method of producing products comprising high-concentration aromatic products and high value-added light olefin products from light cycle oil obtained by fluid catalytic cracking.
摘要:
A method of manufacturing high-quality naphthenic base oils comprising a high aromatic content and a large amount of impurities with a boiling point higher than that of gasoline. High-quality naphthenic base oil may be manufactured from light cycle oil (LCO) and slurry oil (SLO), which are inexpensive, and have a high aromatic content, a large amount of impurities, and which are effluents of a fluidized catalytic cracking (FCC) unit. The method also relates to the pretreatment process of a feedstock, where the amounts of impurities (sulfur, nitrogen, polynuclear aromatic compounds and various metals components) in the feedstock are reduced.
摘要:
An upright type cleaner that uniformly provides a suction force through the whole area of a suction port. The upright type cleaner includes a body having a fan motor that generates suction force, a suction brush provided at a lower portion of the body and having a suction port to perform a cleaning operation relative to a floor using the suction force, a rotating drum installed in the suction brush, a belt connected between the rotating drum and the fan motor, a belt cover that guides the belt and divides the suction port into two suction areas, and a connection path through which the two suction areas are communicated to each other about the belt cover.
摘要:
An upright type cleaner in which a mounting structure of a suction device is improved is described. The cleaner includes a base provided with a suction port, a main body connected to the base, and a suction device including a flexible hose extended from the base or the main body, a pipe connected to the flexible hose, and a tool connected to the pipe. The suction device may be fixedly attached to the main body when the tool is mounted on the suction device.
摘要:
A cleaning system includes a robot cleaner having an opening unit and a first dirt container funneled to the opening unit, and a maintenance station to which robot cleaner is docked to discharge dirt stored in the first dirt container. The maintenance station includes a first inlet hole configured to intake dirt from the first dirt container through the opening unit, a first outlet hole configured to blow air into the first dirt container, a circulating passage provided between the first inlet hole and the first outlet hole, a second dirt container disposed on the circulation passage to store dirt taken in from the robot cleaner, a draft apparatus having a draft fan and a fan motor to drive the draft fan to circulate air through the circulating passage, and a second outlet hole configured to discharge air inside the circulating passage of the maintenance station to an outside.
摘要:
An oil separator for an air conditioner includes a cylindrical housing; a refrigerant discharge pipe communicating with the housing for discharging refrigerant gas; an oil discharge pipe for circulating oil collected in the lower portion of the housing; and a refrigerant inflow pipe having one end facing the inner surface of a side wall of the housing in the tangential direction for supplying a refrigerant-oil mixture to the inside of the housing. An insertion hole, into which the refrigerant inflow pipe is inserted, is easily formed, the efficiency of the oil separator is increased, and noise and vibration generated from the oil separator is reduced.
摘要:
A driving wheel assembly and a robot cleaner having the same includes a main body and a driving wheel assembly including a driving wheel, a housing, a driving motor, a rotary member with rotation around a rotation shaft of the driving motor, where the rotary member includes a first unit and a second unit disposed at a position opposite to the driving wheel with respect to the rotation shaft of the driving motor, and a compression coil spring disposed between the housing and the second unit to apply pressure to the second unit, where a distance between a contact point where the compression coil spring and the second unit contact and the rotation shaft of the driving motor is shorter than a distance between a rotation shaft of the driving wheel and a rotation shaft of the driving motor.
摘要:
An upright type cleaner that uniformly provides a suction force through the whole area of a suction port. The upright type cleaner includes a body having a fan motor that generates suction force, a suction brush provided at a lower portion of the body and having a suction port to perform a cleaning operation relative to a floor using the suction force, a rotating drum installed in the suction brush, a belt connected between the rotating drum and the fan motor, a belt cover that guides the belt and divides the suction port into two suction areas, and a connection path through which the two suction areas are communicated to each other about the belt cover.